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Bug 1534967 - Part 2: Use RootedIdVector in rust binding. r=jonco,fitzgen 

- Replace AutoIdVector with RootedIdVector.
- Replace JS::MutableHandleIdVector through rustbindgen in wrapper.hpp,
  otherwise MutableHandleIdVector will be converted to u8 in rust, and
  causes only 1 byte is passed to props in GetPropertyKeys.
- Add another glue function GetMutableHandleIdVector to get the object.

Differential Revision: https://phabricator.services.mozilla.com/D25360
This commit is contained in:
Yoshi Cheng-Hao Huang 2019-04-04 14:55:44 +08:00
Родитель 222255214e
Коммит 8afaa93a25
6 изменённых файлов: 56 добавлений и 40 удалений
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2
js/rust/build.rs
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@ -152,7 +152,7 @@ const EXTRA_CLANG_FLAGS: &'static [&'static str] = &[
/// transitively use).
const WHITELIST_TYPES: &'static [&'static str] = &[
"JS::AutoCheckCannotGC",
"JS::AutoIdVector",
"JS::RootedIdVector",
"JS::CallArgs",
"js::Class",
"JS::RealmOptions",

5
js/rust/etc/wrapper.hpp
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@ -32,3 +32,8 @@ typedef uint32_t HashNumber;
/// <div rustbindgen replaces="JS::detail::MaybeWrapped" />
template <typename T>
using replaces_MaybeWrapped = T;
/// <div rustbindgen replaces="JS::MutableHandleIdVector" />
struct MutableHandleIdVector_Simple {
uintptr_t handle_mut;
};

13
js/rust/src/glue.rs
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@ -30,7 +30,7 @@ pub struct ProxyTraps {
-> bool>,
pub ownPropertyKeys: ::std::option::Option<unsafe extern "C" fn(cx: *mut JSContext,
proxy: JS::HandleObject,
props: *mut JS::AutoIdVector)
props: JS::MutableHandleIdVector)
-> bool>,
pub delete_: ::std::option::Option<unsafe extern "C" fn(cx: *mut JSContext,
proxy: JS::HandleObject,
@ -90,7 +90,7 @@ pub struct ProxyTraps {
pub getOwnEnumerablePropertyKeys:
::std::option::Option<unsafe extern "C" fn(cx: *mut JSContext,
proxy: JS::HandleObject,
props: *mut JS::AutoIdVector)
props: JS::MutableHandleIdVector)
-> bool>,
pub nativeCall: ::std::option::Option<unsafe extern "C" fn(cx: *mut JSContext,
test: JS::IsAcceptableThis,
@ -257,10 +257,11 @@ extern "C" {
pub fn IsWrapper(obj: *mut JSObject) -> bool;
pub fn UnwrapObjectStatic(obj: *mut JSObject) -> *mut JSObject;
pub fn UncheckedUnwrapObject(obj: *mut JSObject, stopAtOuter: u8) -> *mut JSObject;
pub fn CreateAutoIdVector(cx: *mut JSContext) -> *mut JS::AutoIdVector;
pub fn AppendToAutoIdVector(v: *mut JS::AutoIdVector, id: jsid) -> bool;
pub fn SliceAutoIdVector(v: *const JS::AutoIdVector, length: *mut usize) -> *const jsid;
pub fn DestroyAutoIdVector(v: *mut JS::AutoIdVector);
pub fn CreateRootedIdVector(cx: *mut JSContext) -> *mut JS::RootedIdVector;
pub fn AppendToRootedIdVector(v: *mut JS::RootedIdVector, id: jsid) -> bool;
pub fn SliceRootedIdVector(v: *const JS::RootedIdVector, length: *mut usize) -> *const jsid;
pub fn DestroyRootedIdVector(v: *mut JS::RootedIdVector);
pub fn GetMutableHandleIdVector(v: *mut JS::RootedIdVector)-> JS::MutableHandleIdVector;
pub fn CreateRootedObjectVector(aCx: *mut JSContext) -> *mut JS::RootedObjectVector;
pub fn AppendToRootedObjectVector(v: *mut JS::RootedObjectVector, obj: *mut JSObject) -> bool;
pub fn DeleteRootedObjectVector(v: *mut JS::RootedObjectVector);

28
js/rust/src/jsglue.cpp
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@ -34,12 +34,12 @@ struct ProxyTraps {
JS::Handle<JS::PropertyDescriptor> desc,
JS::ObjectOpResult& result);
bool (*ownPropertyKeys)(JSContext* cx, JS::HandleObject proxy,
JS::AutoIdVector& props);
JS::MutableHandleIdVector props);
bool (*delete_)(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
JS::ObjectOpResult& result);
bool (*enumerate)(JSContext* cx, JS::HandleObject proxy,
JS::AutoIdVector& props);
JS::MutableHandleIdVector props);
bool (*getPrototypeIfOrdinary)(JSContext* cx, JS::HandleObject proxy,
bool* isOrdinary,
@ -67,7 +67,7 @@ struct ProxyTraps {
bool (*hasOwn)(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
bool* bp);
bool (*getOwnEnumerablePropertyKeys)(JSContext* cx, JS::HandleObject proxy,
JS::AutoIdVector& props);
JS::MutableHandleIdVector props);
bool (*nativeCall)(JSContext* cx, JS::IsAcceptableThis test,
JS::NativeImpl impl, JS::CallArgs args);
bool (*hasInstance)(JSContext* cx, JS::HandleObject proxy,
@ -101,7 +101,7 @@ static int HandlerFamily;
\
/* Standard internal methods. */ \
virtual bool enumerate(JSContext* cx, JS::HandleObject proxy, \
JS::AutoIdVector& props) const override { \
JS::MutableHandleIdVector props) const override { \
return mTraps.enumerate ? mTraps.enumerate(cx, proxy, props) \
: _base::enumerate(cx, proxy, props); \
} \
@ -146,7 +146,7 @@ static int HandlerFamily;
} \
\
virtual bool getOwnEnumerablePropertyKeys( \
JSContext* cx, JS::HandleObject proxy, JS::AutoIdVector& props) \
JSContext* cx, JS::HandleObject proxy, JS::MutableHandleIdVector props) \
const override { \
return mTraps.getOwnEnumerablePropertyKeys \
? mTraps.getOwnEnumerablePropertyKeys(cx, proxy, props) \
@ -240,7 +240,7 @@ class WrapperProxyHandler : public js::Wrapper {
}
virtual bool ownPropertyKeys(JSContext* cx, JS::HandleObject proxy,
JS::AutoIdVector& props) const override {
JS::MutableHandleIdVector props) const override {
return mTraps.ownPropertyKeys
? mTraps.ownPropertyKeys(cx, proxy, props)
: js::Wrapper::ownPropertyKeys(cx, proxy, props);
@ -322,7 +322,7 @@ class ForwardingProxyHandler : public js::BaseProxyHandler {
}
virtual bool ownPropertyKeys(JSContext* cx, JS::HandleObject proxy,
JS::AutoIdVector& props) const override {
JS::MutableHandleIdVector props) const override {
return mTraps.ownPropertyKeys(cx, proxy, props);
}
@ -538,20 +538,24 @@ JSObject* UncheckedUnwrapObject(JSObject* obj, bool stopAtOuter) {
return js::UncheckedUnwrap(obj, stopAtOuter);
}
JS::AutoIdVector* CreateAutoIdVector(JSContext* cx) {
return new JS::AutoIdVector(cx);
JS::RootedIdVector* CreateRootedIdVector(JSContext* cx) {
return new JS::RootedIdVector(cx);
}
bool AppendToAutoIdVector(JS::AutoIdVector* v, jsid id) {
bool AppendToRootedIdVector(JS::RootedIdVector* v, jsid id) {
return v->append(id);
}
const jsid* SliceAutoIdVector(const JS::AutoIdVector* v, size_t* length) {
const jsid* SliceRootedIdVector(const JS::RootedIdVector* v, size_t* length) {
*length = v->length();
return v->begin();
}
void DestroyAutoIdVector(JS::AutoIdVector* v) { delete v; }
void DestroyRootedIdVector(JS::RootedIdVector* v) { delete v; }
JS::MutableHandleIdVector GetMutableHandleIdVector(JS::RootedIdVector* v) {
return JS::MutableHandleIdVector(v);
}
JS::RootedObjectVector* CreateRootedObjectVector(JSContext* aCx) {
JS::RootedObjectVector* vec = new JS::RootedObjectVector(aCx);

42
js/rust/src/rust.rs
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@ -23,7 +23,7 @@ use std::thread;
use jsapi::root::*;
use jsval::{self, UndefinedValue};
use glue::{CreateRootedObjectVector, CreateCallArgsFromVp, AppendToRootedObjectVector, DeleteRootedObjectVector, IsDebugBuild};
use glue::{CreateAutoIdVector, SliceAutoIdVector, DestroyAutoIdVector};
use glue::{CreateRootedIdVector, SliceRootedIdVector, DestroyRootedIdVector, GetMutableHandleIdVector};
use glue::{NewCompileOptions, DeleteCompileOptions};
use panic;
@ -934,35 +934,41 @@ impl JSNativeWrapper {
}
}
pub struct IdVector(*mut JS::AutoIdVector);
impl IdVector {
pub unsafe fn new(cx: *mut JSContext) -> IdVector {
let vector = CreateAutoIdVector(cx);
assert!(!vector.is_null());
IdVector(vector)
}
pub fn get(&self) -> *mut JS::AutoIdVector {
self.0
}
pub struct RootedIdVectorWrapper {
pub ptr: *mut JS::RootedIdVector
}
impl Drop for IdVector {
fn drop(&mut self) {
impl RootedIdVectorWrapper {
pub fn new(cx: *mut JSContext) -> RootedIdVectorWrapper {
RootedIdVectorWrapper {
ptr: unsafe {
CreateRootedIdVector(cx)
}
}
}
pub fn handle_mut(&self) -> JS::MutableHandleIdVector {
unsafe {
DestroyAutoIdVector(self.0)
GetMutableHandleIdVector(self.ptr)
}
}
}
impl Deref for IdVector {
impl Drop for RootedIdVectorWrapper {
fn drop(&mut self) {
unsafe {
DestroyRootedIdVector(self.ptr)
}
}
}
impl Deref for RootedIdVectorWrapper {
type Target = [jsid];
fn deref(&self) -> &[jsid] {
unsafe {
let mut length = 0;
let pointer = SliceAutoIdVector(self.0 as *const _, &mut length);
let pointer = SliceRootedIdVector(self.ptr as *const _, &mut length);
slice::from_raw_parts(pointer, length)
}
}

6
js/rust/tests/enumerate.rs
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@ -14,7 +14,7 @@ use js::jsapi::root::JS_NewGlobalObject;
use js::jsapi::root::JS_StringEqualsAscii;
use js::jsapi::root::JS::OnNewGlobalHookOption;
use js::jsval::UndefinedValue;
use js::rust::IdVector;
use js::rust::RootedIdVectorWrapper;
use js::rust::Runtime;
use js::rust::SIMPLE_GLOBAL_CLASS;
use std::ptr;
@ -37,8 +37,8 @@ fn enumerate() {
assert!(rval.is_object());
rooted!(in(cx) let object = rval.to_object());
let ids = IdVector::new(cx);
assert!(GetPropertyKeys(cx, object.handle(), JSITER_OWNONLY, ids.get()));
let ids = RootedIdVectorWrapper::new(cx);
assert!(GetPropertyKeys(cx, object.handle(), JSITER_OWNONLY, ids.handle_mut()));
assert_eq!(ids.len(), 1);
rooted!(in(cx) let id = ids[0]);